• Journal of Biomedical Engineering Research
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• v.18 no.1
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• pp.87-96
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• 1997

A pixel profile in the conventional DANTE sequence is so poor that the excited area by DANTE sequence is a small portion of a pixel. This causes poor signal to noise ratio in DANTE image. In this paper, a frequency modulated(FM) DANTE imaging sequence is proposed to improve pixel profile in DANTE image. A DANTE pulse train is shaped by an FM function so that all the spins within a pixel are excited, thereby improving the signal to noise ratio. It also shows that the pixel profiles are dependent on the sweep in FM signal. Computer simulations and experimental result obtained using a 7.0 T NMR imaging system are presented.

• Proceedings of the KOSOMBE Conference
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• v.1995 no.05
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• pp.42-44
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• 1995

The original DANTE sequence and its variations have limitation in excitation profile (a sinc function-like excitation) due to the finite duration of the DANTE pulsetrain. This sinc function-like selection profile excites only a small fraction of the spins in the pixel thereby results in poor signal to noise ratio (only about ${\sim}1%$ of normal MR imaging sequence). Therefore, this poor signal to noise ratio (SNR) has been the main drawback of the original DANTE sequence. To improve the signal to noise ratio, phases of individual RF pulses in the DANTE pulse train were modulated so that more spins in the object were excited ($1{\sim}3$). We have introduced a new FM (Frequency Modulation) DANTE sequence and analyzed the signal intensity and excitation profiles.

• Proceedings of the KOSOMBE Conference
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• v.1995 no.11
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• pp.167-170
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• 1995

An frequency modulated (FM) DANTE pulse sequence generates a quadratic phase toward the transverse of image by an FM RF pulse. In the image of a serious susceptibility effect, the phase due to the difference of the susceptibility in the pixel occurs susceptibility error which arise signal loss. But the signal loss due to the susceptibility effect in the pixel is reduced when the quadratic phase adds in the pixel. In this paper, we have generated a quadratic function toward the transverse (X-Y) using FM DANTE sequence and the susceptibility effect is reduced in the gradient echo (GE) imaging. Computer simulation and experimental results is obtained by using a whole-body KAIS 2.0T NMR system.

• Bulletin of the Korean Chemical Society
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• v.25 no.4
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• pp.529-532
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• 2004

Cesium-133 NMR spectra of a single crystal of tetragonal $Cs^+ (15-crown-5)_2I^-$ were obtained as a function of crystal orientation in an applied magnetic field of 9.40T and analyzed to provide the magnitudes and orientations of the $^{133}Cs$ chemical shift and quadrupolar tensors for two magnetically nonequivalent and symmetry related sites. Chemical shift tensor components and parameters of quadrupolar interactions are obtained as ${\delta}_{11}=46(1),\;{\delta}_{22}=60(1),\;{\delta}_{33}=-30(1)$ ppm, quadrupole coupling constant QCC = 581(1) kHz, and asymmetry parameter ${\eta}$ = 0.481(1), respectively. The nonaxially symmetric NMR parameters imply that the local environment of the cesium nuclei is nonaxially symmetric. The DANTE experiment burned holes in the $^{133}Cs$ NMR line of the title compound. The hole burning of the single crystal and powder $^{133}Cs$ NMR lines showed that the NMR lines are not homogeneously broadened.

• Journal of Digital Convergence
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• v.15 no.1
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• pp.435-441
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• 2017

In this study, through the Wuwei-ziran of Alighieri Dante's La Divina Commedia & Humanism and Chuang-tzu, revealed in the full-length animation '9' reflecting the loss of humanity and the recovery and the artististic consciousness of producing animation with a new world view, It is an animation case analysis that restores humanity and awakens the inside of human being. Wuwei-ziran of Chuang-tzu is a way of life which helps humans to flow through relation and coordination. Wuwei-ziran is a way of life of dharma where all things are harmonized by the subjective self It is the beginning.

• Sim-seong Yeon-gu
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• v.37 no.2
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• pp.77-98
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• 2022

Symbolic meaning underneath good and evil motifs in the Divine Comedy was analyzed based on its historical, theological, and psychological perspectives. Contemplating psychological structure and collective psyche in divine comedy with the perspective of Dante's era, brief analyses of various mythological elements, such as mythical beasts, fallen angels, cursed space and time, and femininity, were attempted in this paper. The Divine Comedy lustrously responds to modern man's existential questions about divinity and the opposing dark side of the human psyche. It helps restore the significant connection between the religio and conscientiousness toward the imago Dei and shadow.

• Sim-seong Yeon-gu
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• v.37 no.2
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• pp.49-76
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• 2022

This study is to illuminate the problem of shadows and evil appearing in contemporary events in the midst of a period of upheaval through Inferno of Divine Comedy. First, the concept of shadow and evil were briefly summarized in analytical psychology and discussed the importance of considering the concepts with the empirical aspect of relativity and ethics in the field of psychotherapy. The 14th century, the age of Dante, was the embryonic period of the Renaissance beyond the end of the Middle Ages. It was when Dante, who was writing Divine Comedy, had to take off his persona forcibly and live in exile. In a nutshell, it was a transition period for both the individual and the collective. The dark forest is a nigredo, darkness and chaos we face in this transition, but it can be a place of transformation and rebirth. The three beasts (leopard, lion, and she-wolf) encountered in the forest can be considered as the instinctual images that Dante ignored and alienated, which the medieval Christian world had suppressed and eliminated. Especially at the collective level, as destructive instincts, ferocious beasts roam throughout society when a crisis breaks dominant laws of values. The three beasts of Inferno appear as phenomena of shadows and evil. The aspect of leopard was explored Cerberus and Chiaco(pig) as a symbol of greed, and the lion, Farinata as the form of violent passion. The aspect of the she-wolf was examined as Geryon, a deceitful monster with a beast nature hidden behind goodness, the giants in the frozen lake of Cocytus, and Branca D'Oria, who betrayed and murdered the country and family. Inferno reveals the "state" of being trapped when one yields to the evil hidden within oneself and falls into prey.

• International journal of advanced smart convergence
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• v.6 no.2
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• pp.1-8
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• 2017

Recently, the development of the information communication industry has made many changes in the industrial acoustic industry. Especially, it has a great influence on the change of system and equipment of acoustic system. Analog equipment is changing to digital equipment, and integrated control equipment makes it easier to operate and manage the sound system. However, the integrated control system currently on the market is only controllable for some devices. In this paper, we propose a new AoIP - based system configuration method, which enables the operation status monitoring, unmanned operation and self - diagnosis of equipment. As a result of the study, it is confirmed that the proposed system can be operated, monitored, and self - diagnosed at remote sites. It is expected that an AoIP- based sound system will be the industry standard in the future.

• Proceedings of the Polymer Society of Korea Conference
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• 2006.10a
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• pp.274-274
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• 2006

Recently, conjugated polymer solar cells have attracted a great deal of attention. In this work, we applied the various scanning probe techniques to characterize composite materials typically used to fabricate polymer solar cells: poly-3(hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and P3HT/PCBM/Au nanoparticle (NP) samples. The latter is studied due to the idea of using the gold NP surface plasmon to enhance the optical absorption of the composite films. AFM is used to characterize the film morphology whereas conducting AFM is used to study the charge transport properties at the nanoscale. We found that there is a direct correlation between the nanoscale charge transport measurements and the device efficiencies.

• Computational Structural Engineering : An International Journal
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• v.3 no.1
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• pp.31-37
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• 2003

A typical marine platform in the Bay of Campeche is studied from the standpoint of structural reliability, and several characteristics of its deck such as slenderness and diameter/thickness ratios of the legs and actual degree of correlation between some variables are taken into account. The global and local buckling capacities of the deck legs are compared and the correlation coefficient between the critical axial load and the critical moment is assessed in order to validate its influence on the structural reliability. In addition, the influence of the vertical load, and its uncertainty, on the variance of the decks capacity, and latter on, on the platform's failure probability is assessed. The results presented may be used in future studies to further extend and upgrade the first version of the Reference Norm (PEMEX, 2000) and, in the longer term, to improve the current practice in the Design and Requalification of Offshore Marine Platforms in the Bay of Campeche.